AutoTight® by Commins
Manufacturing, Inc.
The Continuous Rod Holdown System
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   AutoTight® CAT Equivalents for TDS37
Required Loads per Simpson Catalog Form C-ATS05 Expires 1/31/07
2003 IBC Runs     1997 UBC Runs
 
CAT 3-910 (T31)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 12,270 19,880 17,670
    R9 S19
2 17,670 19,880  
    R9  
1 24,050 24,544 6,380
    R10 S8L
CAT 3-910 (T31)

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CAT 3-910 (T31)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 16,360 26,507 23,500
    R9 S22
2 23,500 26,507  
    R9  
1 32,070 32,720 8,570
    R10 S8L
CAT 3-910 (T31)

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Two Take-Up Device Equivalent     Two Take-Up Device Equivalent
       
CAT 3-7910 (T321)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 12,270 12,026 12,270
    R7 S10
2 17,670 19,880 5,400
    R9 S8
1 24,050 24,544 6,380
    R10 S8L
CAT 3-7910
(T321)

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CAT 3-7910 (T321)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 16,360 16,035 16,360
    R7 S19
2 23,500 26,507 7,140
    R9 S10
1 32,070 32,720 8,570
    R10 S10L
CAT 3-7910 (T321)

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Take-Up Device Every Level
 Required by Many Structural Plans		     Take-Up Device Every Level
Required by the City of San Diego
       
CAT 3-10 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 12,270 24,544 24,050
    R10 S28
2 17,670 24,544  
    R10  
1 24,050 24,544  
    R10  
CAT 3-10 (T3)

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CAT 3-10 (T3)
   Reqd  Tension Diff.
Level  Load  Load Load
   lbs  Rod Plate
3 16,360 26,507 32,070
    R9 L32
2 23,500 26,507  
    R9  
1 32,070 26,507  
    R9  
CAT 3-10 (T3)

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Single Take-Up Device Equivalent     Single Take-Up Device Equivalent
Embedments
(under construction)		    
Compression Trimmers
Douglas Fir-Larch
 Hem-Fir
 
 
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Copyright 2005  Commins Manufacturing, Inc., Friday Harbor, WA 98250, Tel (360) 378-9484
 

AutoTight® Rod Holdown Systems and components are covered by one or more of the following U.S. Patents 6,390,747; 6,585,469; 6,625,945, other patents both foreign and domestic are pending.